<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=7" />
<title>nav</title>
<link rel="stylesheet" href="css/style.css" type="text/css" /> 
</head>

<body style="background:url(images/nav_beijing.jpg) repeat-y;margin-top:10px;">
<div class="btn">
    <div id="imgid" class="leftarrow">    </div>
</div>
<script language="javascript">
	var img=document.getElementById('imgid');
	var isclose=false;
	img.onclick=function(){
		if(isclose==true){
			parent.document.getElementById('mainFramestId').cols='120,8,*';
			img.className="leftarrow";
			isclose=false;
		}else{
			parent.document.getElementById('mainFramestId').cols='0,8,*';
			img.className="leftarrow_open";
			isclose=true;
		}
	}
	
</script>
</body>
</html>
